Home / 57,720.36-86,569.60-20,271.64

Finding the Fourth Proportional to 57,720.36, 86,569.60 and 20,271.64

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Solution

The fourth proportional to 57,720.36, 86,569.60 and 20,271.64 is: 30,403.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,720.36 : 86,569.60 = 20,271.64 : x
  2. Step 2: Convert to fraction form
    57,720.36/86,569.60 = 20,271.64/x
  3. Step 3: Cross multiply
    57,720.36x = 86,569.60 × 20,271.64
  4. Step 4: Simplify right side
    57,720.36x = 1,754,907,766.14
  5. Step 5: Solve for x
    x = 1,754,907,766.14/57,720.36
  6. Step 6: Final answer
    x = 30,403.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.